Electric heater for incubators, brooders, and the like.



G. M. CURTIS. ELBGTRIG HEATER FOR INUUBATORS, BBOODER$, AND THE LIKE.

APPLICATION FILED APR. 30, 1907.

Patented Mar. 7, 1911.

KNVENTOR L M rm mww N r it In the to of the eg diner-y incubator,

the egg tray 12.

U TE STATES PATENT OFFICE;

GRAN'I H. CURTIS, 01 BUFFALO, NEW YORK, ASSIGNOB T0 CYPKERS INC'UBLTOBCOMPANY, OF BUFFALO, NEW 1Y0}? K, A CORPORATION OF NEW YORK.

nnnc'mrc HEATER ron mconh'rons, nnoonnns, AND THE LIKE.

Specifics/big: of Letters Patent. Kpplicetion flIed April 30, 1907.Serial No. 371.185.

Patented Mar. 1', 911.

To all whom- 1It may concern:

Be it known that I GRANT M. Guerra. a citizen of the United tatcs, andresident oi Buffalo, inthe county of Erie and State of New York,v haveinvented certain ne and useful Improvements in Electric Heaters forIncubators, Broodcrs, and the Like, the following is a s ecification.

"This invention re ates'to heating 1nans for incubators, and consists inratus hereinafter described and claimed. The object of the invention is,to produce a simple device, which may be inserted in any" incubator'Wflt hflllt substantial clian'gfi therein and which may, by 'conncctionwit an ordinary electric lamp socket take ordinary electric current forlightin purposes nnd conrertit into heat for incu atio'n.

e 1 is-la. pcrspec'-' In'the dra.wings:-'-Fi h tire view of a heater emy'ing; the present invention; and Fig. 2 is uvertlcal, centrallongitudinal section through an incubator containin theheater.

lnthc rawings, Fig. 1 represents an .orhiwing the ordinary -in'cu-- 1attached thereto, whereby the incubator may be heated by means of alamp.

shown -the'suid heater hasan air inlet '2 at the bottom; an air out--let 3- at the top,- which is connected with the said air inlet; an-airdischarge Id 4' into the upper-portion of the interior o the.

hutor heater In the incubator here incubator; nidamper 5 for closing theout-let 3; a damper rod' 6 pixjotcd on the standard with thecounterbalancewc'ight 8; and" a thermostat rod 9 attached 10. Thethermostat 10 is. placed inside the egg chambcrll, so as to the sameheat to which the c gs are suh ected. In-the-egg chamber is- I, andprovided to a thermostat he ufiected by underneath"'whieh -1s preferablyaporous diaphragm 13 entirclyacross chamber, and unaround the outside ofthe heater 15 an through the passage- 4. and thence out through the.outlet. 3,-kvhen the damper 5 .israised.

When thefheat in the egg chamber I1 exceeds the selected-limit, the rodispullcd.

of which the sppube changed into an What I claim is:--'.

, hrooders, and -tion, a suppo downward by the thermostat 10, and thedamper '5 is raised, thus allowing the heated air to pass out-from theupper portionof the incubator, and allowing the cooler air to pass in atthe bottom. Insomeincubators there. is an air inlet 4 in .the spacebetween the porous diaphragm 13 and the egg tray 12.

- The electric heater comprises a recto gu l'urbQX '17, open at thebottom,'and'ha ing' o. slot 18 through its edge and part way in its .topto receive the support 10 of the thermostat.) This'slot is covered byapiece of felt 19 which preventsair from passing in and out through saidslot, but permits thcinsertion and 'rernovul of the heater box 17without disturbing the .sup rt-in rod 10 -'o f the thermostat. In'the x1 J is a.

' heating m'eans,"such as suitable electrical resistance,n'l1ic h, whencurrent is passed through the resistance, will becomeheated,

andradiate the heat in the neighboring air. -In' the present instance,the resistance con- 'sists ofa series of electric lamps 20 con iicctedbysuitable 'wirin with a flexible cord 21 which is connected with a sourceof electric current. 1

Any ordinary hot air incubator may easily electrically heated incubato'r, by merely inserting the detached support or box 17 into theupper part of the egg chamber, -and supporting the szimc upon suitablebracketsor cleats therein.

When it is desired break the curi-ent'throug the heater and cubator, asshown, for example, in United States patent to Perkins, No. 745,458,dated December 1, 1903, thebrockets 16 may be arranged to constitute anair-tight joint with the box 17 of the heater, since no sir circu lationis necessary to use the noyel forni- -of heater described hereirninconnection. with a thermostat arranged to make and in suchna case. Whenthe-heater is so used the felt 19 covering the islot 18.ncts to preventthe'paxage of heated -air through this slot,' therebyecononiizingt'hclheat within the egg chamber.

trio heater. :Eor incubators, the like, being, in combinart in the formof asubstan- 'tiiill flat plate provided with a recess extending fromone edge but otherwise jimperforate, yielding means. for closing said.

recess, and an electric heating device mounb from one edge, andincandescent electric ed. upon the support. lamps mounted upon the lowensuyfae'e of 2. An electric heater for incubators, the support. breeders,and the like, having, in eombina- GRANT M. CURTIS 5 tion, a supportcomprising a substantially Wit es fla-t base. plate with dependingmarginal Rom, H. Essex,

flanges and a recess extending inwardly S. B McALLIs'mn;

